org.n52.sos.soe.HttpUtil.java Source code

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Here is the source code for org.n52.sos.soe.HttpUtil.java

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/**
 * Copyright (C) 2014 - 2014
 * by 52North Initiative for Geospatial Open Source Software GmbH
 *
 * Contact: http://52north.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.n52.sos.soe;

import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.Assert;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpUtil {

    private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class);

    public static String resolveServiceURL() {
        String url = Configuration.instance().getSOEServiceURL();
        logger.info(url);

        Assert.assertNotNull("URL was null!", url);
        Assert.assertTrue("URL equalled '${sos.service.url}'", !url.equals("${sos.service.url}"));
        Assert.assertTrue("URL equalled was empty!", !url.isEmpty());
        return url;
    }

    public static XmlObject executeGetAndParseAsXml(String target) throws IOException, XmlException {
        CloseableHttpClient client = createClient();
        XmlObject xo = XmlObject.Factory.parse(executeGet(target, client));
        client.close();
        return xo;
    }

    private static CloseableHttpClient createClient() {
        return HttpClientBuilder.create().build();
    }

    private static InputStream executeGet(String target, CloseableHttpClient client) throws IOException {
        logger.info("HTTP GET: " + target);

        long start = System.currentTimeMillis();
        HttpGet get = new HttpGet(target);
        get.setConfig(RequestConfig.custom().setConnectTimeout(1000 * 120).build());
        HttpResponse resp = client.execute(get);
        logger.info("Request latency: " + (System.currentTimeMillis() - start));
        return resp.getEntity().getContent();
    }

    public static JsonNode executeGetAndParseAsJson(String target) throws IOException, ClientProtocolException {
        CloseableHttpClient client = createClient();
        ObjectMapper mapper = new ObjectMapper();
        JsonNode json = mapper.readTree(executeGet(target, client));
        client.close();
        return json;
    }

}